Simultaneous segmentation of images and shapes

A novel method for simultaneous image segmentation and shape decomposition is presented. The method may be applied directly to grayscale images. The method is based on the analysis of the level curves of an ''edge-strength'' function which is a measure of boundaryness of the image at each point.
Conference on Vision Geometry VI


Coloring 3D symmetry set: perceptual meaning and significance in 3D
Tarı, Zehra Sibel (1999-12-01)
A computational implementation for assigning perceptual meaning and significance to the points in the symmetry is presented. The coloring scheme allows recovery of the features of interest such as the shape skeletons from the complicated symmetry representation. The method is applicable to arbitrary data including color and multi-modality images. On the computational side, for a 256 × 256 binary image, two minutes on a low-end Pentium machine is enough to compute both the distance function and the colored n...
Yasaroglu, Yagiz; Alatan, Abdullah Aydın (2014-10-30)
A novel watermarking method is presented in which the data embedded into a 3D model is extracted from an arbitrary 2D view by using a perspective projective invariant. The data is embedded into 3D positions of selected interest points on a 3D mesh. Determining the interest point modification vectors for ensuring watermark detection constitutes an important part of the proposed method. Different watermark embedding schemes based on optimization of the watermark function are implemented and evaluated. Another...
Source-aggregated-poisson with applications to groupwise shape analysis and mesh segmentation
Gençtav, Murat; Tarı, Zehra Sibel; Department of Computer Engineering (2018)
By computing multiple solutions to Poisson’s equation with varying source functions within the shape and aggregating those solutions, we obtain a novel function for shape analysis, which we call Source-Aggregated-Poisson, or SAP. Despite the local computations, by means of specially designed source functions, our model mimics the part-coding behavior of a previous nonlocal model. We show that SAP is robust under geometric transformations and nuisance factors including topological distortions, pose changes, ...
Parallel processing of two-dimensional euler equations for compressible flows
Doǧru, K.; Aksel, M.h.; Tuncer, İsmail Hakkı (2008-12-01)
A parallel implementation of a previously developed finite volume algorithm for the solution of two-dimensional, unsteady, compressible Euler equations is given. The conservative form of the Euler equations is discretized with a second order accurate, one-step Lax-Wendroff scheme. Local time stepping is utilized in order to accelerate the convergence. For the parallel implementation of the method, the solution domain is partitioned into a number of subdomains to be distributed to separate processors for par...
Transient simulation of reacting radiating flows
Uygur, A. Bilge; Tarhan, Tanil; Selçuk, Nevin (2006-10-01)
Laminar methane-air diffusion flame was simulated by coupling a method of lines based parallel direct numerical simulation code with a radiation code based on method of lines solution of discrete ordinates method. The predictions of the code are validated against experimental data as well as numerical results of the same code without radiation model. Comparisons show that incorporation of radiation code to the computational fluid dynamics code results in a significant improvement in the predicted temperatur...
Citation Formats
Z. S. Tarı, “Simultaneous segmentation of images and shapes,” SAN DIEGO, CA, 1997, vol. 3168, Accessed: 00, 2020. [Online]. Available: